May, 1917J The Al gee of Michigan 219 



MYXOPHYC^. 



CHROOCOCCACE^. 



Chroococcus minutus (Kiitz) Nag. Previously recorded by 



Collins from Maine. On soil in bog near Carp Lake, 



Emmet Co., Aug. 9, 1915. 

 Chroococcus turgidis (Kiitz) Nag. Carp Lake, Emmet Co., 



Aug. 9, 1915; Twin Lake, Muskegon Co., June 2, 1915. 

 Aphanocapsa grevillei (Hass.) Rabenh. Indian River, Man- 



istique, Aug. 11, 1915. 

 Gloeocapsa atrata (Turp.) Kiitz. Trout Lake, Chippewa Co., 



Aug. 10, 1915. Previously reported from Alaska. 

 Gomphosphaeria aponina Kiitz. Railroad ditch, Manistique, 



Aug. 11, 1915; bog pool, Mackinaw, Aug. 9, 1915. 

 Coelosphaerium kuetzingianum Nag. Seney, Aug. 12, 1915. 

 Aphanothece stagnina (Spreng.) A. Br. Walnut Lake, Oakland 



Co., ]\Iay, 190() (Hankinson). 

 Aphanothece saxicola Nageli. Pond, Manistique, Aug. 11, 1915. 

 Merismopedium. glaucum (Ehrenb.) Nag. Trout Lake, Chip- 

 pewa Co., Aug. 10, 1915; bog near Carp Lake, Emmett 



Co., Aug. 9, 1915. 

 Merismopedium elegans A. Br. Carp Lake, Emmet Co., 



Aug. 9, 1915; Twin Lake, Muskegon Co., June 2, 1915. 

 Merismopedium tenuissimum Lemmerman. Carp Lake, Aug. 



9, 1915. 



OSCILLATORIACE^. 



Oscillatoria chalybea Mertens. Seney, Aug. 12, 1915. 

 Oscillatoria princeps Vaucher. Whitefish Point, Aug., 1913, 



(Hankinson); Trout Lake, Aug. 10, 1915. 

 Lyngbya estuarii (Mert.) Liebman. Breedsville, Van Buren Co., 



June 4, 1915; Bangor Lake, Van Buren Co., June 4, 1915; 



Caloma Junction, Berrien Co., pasture pools, June 4, 1915. 

 Microcoleus lacustris (Rabenh.) Farlow. Seney, Aug. 15, 1915; 



Manistique, Aug. 11, 1915. 



NOSTOCACE.^i;. 



Anabaena flos-aquae (Lyng.) Breb. Walnut Lake, Oakland 



Co., June 24, 1916, (Hankinson). 

 Anabaena variabilis Kiitz. Railroad ditch, New Buffalo, May 



31, 1915. 

 Anabaena circinalis Rabenh. Trout Lake, Aug. 10, 1915. 



